It's a DeWalt Cordless Hammer Drill DC212KA. $369 at Home Depot online. It does the job just fine. I use the 18v lithium batteries exclusively and get 5-7 holes per battery. Usually have 4-5 batteries and 3 chargers with me on every job since they have to cool down before you put them back in the charger. I also use 3/4" Metabo SDS Plus 4 cutter bits...last a long time.

The cordless is great for smaller jobs or spaces that are broken up. But in open spaces with no other trades to work around, I still use my corded Bosch.

However, if you have $1,000 + to burn, you could get a 36v cordless Bosch...that bad boy just tears through concrete

Here's another recommendation. Just bought a 18v DeWalt grinder for prepping for calcium chloride tests. Works great with a 4 or 5" wheel with PCD cutters! Especially when grinding off tough carpet adhesive. And with a standard dust shroud, it connects perfectly to the DeWalt Cordless Vac and no dust.

A 20" x 20" area is done in less than a minute!! Only downside is that I only get 4 or 5 test areas done before it's time to change out the battery. I take 6 batteries on jobs which is usually plenty for most sized jobs.